<html>
<head>
    <style>
      div#topDiv
      {
        flow:vertical;
        overflow:auto scroll-manner(wheel-animation:false, wheel-step:10dip);
        size:*;
      }

    </style>
    
    <script>
    document.ready = function()
    {
        var list = [];
        for(var i = 0; i < 100; ++i)
          list.push(<button>button-{i}</button>);
        document.$("div#topDiv").content(list);
    }
    </script>
    
</head>
<body>
   <div id="topDiv"></div>
</body>
</html>